The Shadow II: ORC Rating

GPH

460.6

OSN

450

LOA

15.85 m

Displacement

7839 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

1.0012

Medium

1.3125

High

1.5347

Triple Offshore

Low

1.2995

Medium

1.6372

High

1.8818

Boat Specifications

Dimensions

Length overall: 15.85 m
Beam: 4.1 m
Draft: 3.21 m
Displacement: 7839 kg
Crew weight: 1090 kg
Wetted surface: 42.34 m²

Sails

Mainsail: 92.73 m²
Genoa: 62.52 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 260.79 m²

Design

Type: Transpac 52
Builder: Westerly Yacht
Designer: Reichel/Pugh
Year built: 2002

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,43.3,6.622946,52,7.41,60,7.92,75,8.31,90,8.21,110,7.75,120,7.49,135,6.7,141.3,6.201706,150,5.58
8,41.3,7.680388,52,8.61,60,8.96,75,9.25,90,9.22,110,9.11,120,9.03,135,8.51,140.8,7.987669,150,7.15
10,39.5,8.060915,52,9,60,9.32,75,9.82,90,9.97,110,9.72,120,9.93,135,9.48,147.1,8.682501,150,8.42
12,38.8,8.289087,52,9.2,60,9.56,75,10.23,90,10.71,110,10.37,120,10.59,135,10.52,150,9.43,152.3,9.148473
14,37.7,8.455259,52,9.35,60,9.73,75,10.52,90,11.2,110,11.05,120,11.25,135,11.71,149.4,10.246973,150,10.19
16,37.1,8.563362,52,9.57,60,9.98,75,10.72,90,11.56,110,11.97,120,12.07,135,12.73,144.9,11.94158,150,11.29
20,37.3,8.661508,52,9.75,60,10.31,75,11.32,90,12.07,110,13.62,120,13.64,135,14.49,145.8,14.653953,150,14

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	7.41	7.92	8.31	8.21	7.75	7.49	6.7	5.58
8	8.61	8.96	9.25	9.22	9.11	9.03	8.51	7.15
10	9	9.32	9.82	9.97	9.72	9.93	9.48	8.42
12	9.2	9.56	10.23	10.71	10.37	10.59	10.52	9.43
14	9.35	9.73	10.52	11.2	11.05	11.25	11.71	10.19
16	9.57	9.98	10.72	11.56	11.97	12.07	12.73	11.29
20	9.75	10.31	11.32	12.07	13.62	13.64	14.49	14

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.3°	4.82	141.3°	4.84
8	41.3°	5.77	140.8°	6.19
10	39.5°	6.22	147.1°	7.29
12	38.8°	6.46	152.3°	8.1
14	37.7°	6.69	149.4°	8.82
16	37.1°	6.83	144.9°	9.77
20	37.3°	6.89	145.8°	12.12

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	7.41	8.61	9.00	9.20	9.35	9.57	9.75
60°	7.92	8.96	9.32	9.56	9.73	9.98	10.31
75°	8.31	9.25	9.82	10.23	10.52	10.72	11.32
90°	8.21	9.22	9.97	10.71	11.20	11.56	12.07
110°	7.75	9.11	9.72	10.37	11.05	11.97	13.62
120°	7.49	9.03	9.93	10.59	11.25	12.07	13.64
135°	6.70	8.51	9.48	10.52	11.71	12.73	14.49
150°	5.58	7.15	8.42	9.43	10.19	11.29	14.00